Home / 213,845.28-320,749.20-64,119

Finding the Fourth Proportional to 213,845.28, 320,749.20 and 64,119

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Solution

The fourth proportional to 213,845.28, 320,749.20 and 64,119 is: 96,172.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,845.28 : 320,749.20 = 64,119 : x
  2. Step 2: Convert to fraction form
    213,845.28/320,749.20 = 64,119/x
  3. Step 3: Cross multiply
    213,845.28x = 320,749.20 × 64,119
  4. Step 4: Simplify right side
    213,845.28x = 20,566,117,954.80
  5. Step 5: Solve for x
    x = 20,566,117,954.80/213,845.28
  6. Step 6: Final answer
    x = 96,172.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.